Organic color centers are an emergent class of quantum emitters that hold vast potential for applications in bioimaging, chemical sensing, and quantum information processing. Here, we show that these synthetic color centers follow interesting structure-property relationships through comparative spectral studies of 14 purified single-walled carbon nanotube chiralities and 30 different functional groups that vary in electron-withdrawing capability and bonding configurations. The defect emission is tunable by as much as 400 meV in the near-infrared as a function of host structure and the chemical nature of the color centers. However, the emission energy is nearly free from chiral angle and family patterns of the nanotube host (although this strongly depends on the nanotube diameter), suggesting that a trapped exciton at the organic color centers to some degree electronically decouples from the one-dimensional semiconductor host. Our findings provide important insights for designing and controlling this new family of synthetic color centers.

有机色心是一类新兴的量子发射体，在生物成像、化学传感和量子信息处理方面具有巨大的应用潜力。在这里，我们通过对 14 种纯化的单壁碳纳米管手性和 30 种吸电子能力和键合构型不同的不同官能团的比较光谱研究，表明这些合成色心遵循有趣的结构-性质关系。作为主体结构和色心化学性质的函数，缺陷发射在近红外范围内可调高达 400 meV。然而，发射能量几乎不受纳米管主体的手性角和族模式的影响（尽管这很大程度上取决于纳米管直径），这表明有机色心处的俘获激子在某种程度上与一维半导体电子解耦主持人。我们的研究结果为设计和控制这一新的合成色心系列提供了重要的见解。